Seiko Cal. 3897 - 991

The Seiko 3897-991 represents an important milestone in Seiko's 1979 lineup. With its 19mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-7af1bf1137bc]

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1979

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